HEIDENHAIN TNC 640 (34059x-05) Cycle programming - Manual (Page 306)

Cycles: Special Functions
11.9 FACE MILLING (Cycle 232, DIN/ISO: G232)
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TNC 640 | User's Manual Cycle Programming | 1/2015
Please note while programming:
Enter the
2nd set-up clearance in Q204 so that no
collision with the workpiece or the fixtures can occur.
If the starting point in the 3rd axis Q227 and the
end point in the 3rd axis Q386 are entered as equal
values, the TNC does not run the cycle (depth = 0
has been programmed).